The current state of glaciers within the Koryak Highland and assessment of their development by the middle of this century
The Koryak Upland, located in Russian Far East, has so far been poorly studied in terms of glaciology. The information contained in the USSR Glacier Inventory (1982) was obtained by analysis of topographic maps and aerial photography. On the publication date, the Inventory of Koryak Upland included...
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ftdoajarticles:oai:doaj.org/article:91a7cfd2b7524bc9b5e87285592ff658 2023-05-15T17:05:19+02:00 The current state of glaciers within the Koryak Highland and assessment of their development by the middle of this century M. D. Ananicheva 2015-04-01T00:00:00Z https://doi.org/10.15356/2076-6734-2012-1-15-23 https://doaj.org/article/91a7cfd2b7524bc9b5e87285592ff658 RU rus Nauka https://ice-snow.igras.ru/jour/article/view/143 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2012-1-15-23 https://doaj.org/article/91a7cfd2b7524bc9b5e87285592ff658 Лëд и снег, Vol 52, Iss 1, Pp 15-23 (2015) climate model equilibrium line altitude glacier area glacier systems mass balance projection satellite image Science Q article 2015 ftdoajarticles https://doi.org/10.15356/2076-6734-2012-1-15-23 2023-03-19T01:40:13Z The Koryak Upland, located in Russian Far East, has so far been poorly studied in terms of glaciology. The information contained in the USSR Glacier Inventory (1982) was obtained by analysis of topographic maps and aerial photography. On the publication date, the Inventory of Koryak Upland included 715 glaciers. To study of the current state of Koryak glaciers, we used satellite imageries – Landsat, Terra /Aqua (EOS AM-1) and ASTER. Deciphering the scenes showed that a significant portion of the glaciers melted away since the mid-1970's until now. We have found only 237 glaciers. Some glaciers are appeared to be rock glaciers, filled with detrital material, cemented by ice in a single body. They might be taken for real glaciers while categorization. The analysis of the retreat (reduction in area) of Koryak glaciers by groups with the same morphological type and the same aspect was conducted. The total retreat of the glaciers of this region varied from 40 (for those measured in situ) to 70% (mean total) as compared to aerial photography surveys (1950). This is the most intense reduction among the studied glacier systems of the Russian Subarctic. It can be explained by the changes in atmospheric circulation due to climate change, the Koryak Upland dries out while the increasing of annual air temperatures. Significant reduction of the glacier area was an incentive for us to undertake a work to assess the evolution of the glaciers in the near future. We used a GCM – ECHAM5 (B1) as the climatic scenario. The projection method has got further development: we have estimated the evolution of glacier systems in which the prevailing type is corries (relatively small circus glacier). The results show a diverse picture of glacier reduction by area, but in general the glacierization will not disappear for the period 2049–2060, reducing the extent by only 17% of the contemporary state. Article in Journal/Newspaper Koryak Subarctic Directory of Open Access Journals: DOAJ Articles Ice and Snow 117 1 15 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
climate model equilibrium line altitude glacier area glacier systems mass balance projection satellite image Science Q |
spellingShingle |
climate model equilibrium line altitude glacier area glacier systems mass balance projection satellite image Science Q M. D. Ananicheva The current state of glaciers within the Koryak Highland and assessment of their development by the middle of this century |
topic_facet |
climate model equilibrium line altitude glacier area glacier systems mass balance projection satellite image Science Q |
description |
The Koryak Upland, located in Russian Far East, has so far been poorly studied in terms of glaciology. The information contained in the USSR Glacier Inventory (1982) was obtained by analysis of topographic maps and aerial photography. On the publication date, the Inventory of Koryak Upland included 715 glaciers. To study of the current state of Koryak glaciers, we used satellite imageries – Landsat, Terra /Aqua (EOS AM-1) and ASTER. Deciphering the scenes showed that a significant portion of the glaciers melted away since the mid-1970's until now. We have found only 237 glaciers. Some glaciers are appeared to be rock glaciers, filled with detrital material, cemented by ice in a single body. They might be taken for real glaciers while categorization. The analysis of the retreat (reduction in area) of Koryak glaciers by groups with the same morphological type and the same aspect was conducted. The total retreat of the glaciers of this region varied from 40 (for those measured in situ) to 70% (mean total) as compared to aerial photography surveys (1950). This is the most intense reduction among the studied glacier systems of the Russian Subarctic. It can be explained by the changes in atmospheric circulation due to climate change, the Koryak Upland dries out while the increasing of annual air temperatures. Significant reduction of the glacier area was an incentive for us to undertake a work to assess the evolution of the glaciers in the near future. We used a GCM – ECHAM5 (B1) as the climatic scenario. The projection method has got further development: we have estimated the evolution of glacier systems in which the prevailing type is corries (relatively small circus glacier). The results show a diverse picture of glacier reduction by area, but in general the glacierization will not disappear for the period 2049–2060, reducing the extent by only 17% of the contemporary state. |
format |
Article in Journal/Newspaper |
author |
M. D. Ananicheva |
author_facet |
M. D. Ananicheva |
author_sort |
M. D. Ananicheva |
title |
The current state of glaciers within the Koryak Highland and assessment of their development by the middle of this century |
title_short |
The current state of glaciers within the Koryak Highland and assessment of their development by the middle of this century |
title_full |
The current state of glaciers within the Koryak Highland and assessment of their development by the middle of this century |
title_fullStr |
The current state of glaciers within the Koryak Highland and assessment of their development by the middle of this century |
title_full_unstemmed |
The current state of glaciers within the Koryak Highland and assessment of their development by the middle of this century |
title_sort |
current state of glaciers within the koryak highland and assessment of their development by the middle of this century |
publisher |
Nauka |
publishDate |
2015 |
url |
https://doi.org/10.15356/2076-6734-2012-1-15-23 https://doaj.org/article/91a7cfd2b7524bc9b5e87285592ff658 |
genre |
Koryak Subarctic |
genre_facet |
Koryak Subarctic |
op_source |
Лëд и снег, Vol 52, Iss 1, Pp 15-23 (2015) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/143 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2012-1-15-23 https://doaj.org/article/91a7cfd2b7524bc9b5e87285592ff658 |
op_doi |
https://doi.org/10.15356/2076-6734-2012-1-15-23 |
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Ice and Snow |
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117 |
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1766059833013829632 |